Gail Clifford, MD, an internal medicine hospitalist practicing in Orlando, Florida, says, Older medications like phentermine are often covered because they have been around a long time and are relatively inexpensive
Well, GLP-1 is also produced by nerves in the brainstem itself, and a large body of evidence points to the appetite-reducing effects of GLP-1 mimicking drugs, like Ozempic, being mediated by these brain GLP-1 receptors
doi:10.1055/s-2006-939565
It supports recovery
Both Eli Lilly and Novo Nordisk, however, see the writing on the wall
The evolutionary origin of exendin genes ( exendin 14) has not been fully resolved but it seems likely that exendins evolved by duplication from a glucagon-like peptide gene precursor 14